Q. Griffith could distinguish the two strains of Streptococcus pneumoniae due to
NTA AbhyasNTA Abhyas 2020
Solution:
Frederick Griffith has done experiments on bacteria Streptococcus pneumonia. This bacteria causes pneumonia.
- Griffith has observed the change in the physical form of the bacteria during the experiments.
- Streptococcus pneumonia produces 2 types of colonies:
1. Smooth and shiny colonies (S - strain / virulent strain): Bacteria possess mucous (polysaccharide) coat.
2. Rough colonies (R - strain / Non-virulent strain): Bacteria lacks mucous coat.
- Griffith has observed the change in the physical form of the bacteria during the experiments.
- Streptococcus pneumonia produces 2 types of colonies:
1. Smooth and shiny colonies (S - strain / virulent strain): Bacteria possess mucous (polysaccharide) coat.
2. Rough colonies (R - strain / Non-virulent strain): Bacteria lacks mucous coat.